1) A person with teeth that havn't fully grown out of their gums yet giving the impression they've been hit in the mouth by a machete cutting off their teeth in a straight horizonal line with surgical precision.

2) A person with too many metal piercings in their face looking as if they where too close to a grenade when it went off piercing their face with shrapnel(that can later be melted down to make a machete), making them seem as if they've got a bigger more annoying grin or smile.
Biff: Hey Jeff, this is my friend Heff.
Jeff: Nice to meet...woah dude thats up with your teeth!?
Heff: I've got Machete Mouth Syndrome.
Jeff: Shit dude! You ever heard of Ribena Tooth Kind!?

Greg: Hey dude the chick I was railing lastnight was so wild until she smiled at me dude...serious Machete Mouth goin on there.
Mike: Shit man...did you nail her anyways?
Greg: YEAH DUDE!
Mike: AWESOME Your sweet man!

Peter: Did you see that guys face? It was full of metal what was wrong with him?
Henry: Machete Mouth...a serious case!
by Johnny Hurts April 9, 2006
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1) A person with teeth that havn't fully grown out of their gums yet giving the impression they've been hit in the mouth by a machete cutting off their teeth in a straight horizonal line with surgical precision.

2) A person with too many metal piercings in their face looking as if they where too close to a grenade when it went off piercing their face with shrapnel(that can later be melted down to make a machete), making them seem as if they've got a bigger more annoying grin or smile.
Biff: Hey Jeff, this is my friend Heff.
Jeff: Nice to meet...woah dude thats up with your teeth!?
Heff: I've got Machete Mouth Syndrome.
Jeff: Shit dude! You ever heard of Ribena Tooth Kind!?

Greg: Hey dude the chick I was railing lastnight was so wild until she smiled at me dude...serious Machete Mouth goin on there.
Mike: Shit man...did you nail her anyways?
Greg: YEAH DUDE!
Mike: AWESOME Your sweet man!

Peter: Did you see that guys face? It was full of metal what was wrong with him?
Henry: Machete Mouth...a serious case!
by Fanny Hurts May 2, 2006
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